ENTRY C2994 20241001 C299400000001 SUBENT C2994001 20241001 20250110 C299400100001 BIB 7 27 C299400100002 TITLE Study of the (alpha,2alpha) reaction at 700 MeV C299400100003 AUTHOR (W.E.Dollhopf,C.F.Perdrisat,P.Kitching,W.C.Olsen) C299400100004 INSTITUTE (1USAWMC,1CANALA) C299400100005 REFERENCE (J,NP/A,316,350,1979) C299400100006 #doi:10.1016/0375-9474(79)90042-3 C299400100007 FACILITY (SYNCH,1USASRE) The SREL synchrocyclotron C299400100008 DETECTOR (TELES,SCIN,MWSC) The experimental setup included two C299400100009 primary particle telescopes and two secondary C299400100010 telescopes for beam monitoring. The two particle C299400100011 telescopes of the primary detection system were C299400100012 oriented at 35 degrees and 52.5 degrees. A particle C299400100013 traversing the higher energy telescope (35 degrees) C299400100014 was defined by coincident signals in the plastic four C299400100015 scintillators. A bending magnet 45 cm wide and 91 cm C299400100016 long was located between two sets of wire spark C299400100017 chambers with magnetostrictive readouts. A spark C299400100018 chamber set consisted of three wire planes for C299400100019 horizontal coordinates, and two wire planes for C299400100020 vertical coordinates. A particle traversing the lower C299400100021 energy telescope (52.5 degrees) was defined by C299400100022 coincident signals in plastic scintillators rs A1, A2 C299400100023 and A3, where A3 was the first detector in the range C299400100024 telescope. One set of wire spark chambers was located C299400100025 between A1 and A2, defining the scattering angle of C299400100026 the particle. The range telescope included six 0.08 C299400100027 cm thick plastic scintillators. C299400100028 HISTORY (20240930C) OG C299400100029 ENDBIB 27 0 C299400100030 COMMON 3 3 C299400100031 EN EN-ERR EN-RSL-FW C299400100032 MEV MEV MEV C299400100033 700. 3. 10. C299400100034 ENDCOMMON 3 0 C299400100035 ENDSUBENT 34 0 C299400199999 SUBENT C2994002 20241001 20250110 C299400200001 BIB 7 13 C299400200002 REACTION (3-LI-6(A,D+A)2-HE-4,,DA/DA/DE,A/A/D,MSC) C299400200003 The quasi-elastic cross sections as a function of the C299400200004 recoil momentum C299400200005 ANG-SEC (ANG1,A) angle (lab.) between beam and the 1-st alpha C299400200006 (ANG2,A) angle (lab.) between beam and the 2-nd alpha C299400200007 MOM-SEC (MOM-SEC,D) C299400200008 SAMPLE The target of 6Li had thickness 3.03e22 nuclei/cm2. C299400200009 ANALYSIS Efficiency: spark chamber - 0.91 +/- 0.8%, range C299400200010 side - 0.70 +/- 7.5%, magnet side - 0.88 +/- 7.5%. C299400200011 ERR-ANALYS (ERR-S) The statistical errors C299400200012 (ERR-SYS) Total systematic uncertainty C299400200013 (ERR-1) Uncertainty in the target thickness C299400200014 STATUS (TABLE,,W.E.Dollhopf+,J,NP/A,316,350,1979) Tab. 2 C299400200015 ENDBIB 13 0 C299400200016 COMMON 4 3 C299400200017 ERR-SYS ERR-1 ANG1 ANG2 C299400200018 PER-CENT PER-CENT ADEG ADEG C299400200019 10. 1.5 35. 52.5 C299400200020 ENDCOMMON 3 0 C299400200021 DATA 3 21 C299400200022 MOM-SEC DATA ERR-S C299400200023 MEV/C MUB/SR2MEV MUB/SR2MEV C299400200024 43.7 1.45 0.28 C299400200025 52.0 1.91 0.21 C299400200026 59.2 2.08 0.33 C299400200027 65.6 1.55 0.20 C299400200028 71.5 1.63 0.21 C299400200029 81.9 0.76 0.12 C299400200030 86.6 0.99 0.17 C299400200031 95.4 0.87 0.18 C299400200032 99.5 0.65 0.14 C299400200033 103.5 0.78 0.17 C299400200034 107.3 0.79 0.28 C299400200035 110.9 0.42 0.13 C299400200036 117.9 0.42 0.13 C299400200037 121.3 0.48 0.11 C299400200038 127.7 0.34 0.14 C299400200039 133.8 0.00 0.15 C299400200040 136.8 0.22 0.08 C299400200041 139.7 0.31 0.13 C299400200042 145.3 0.00 0.06 C299400200043 148.0 0.10 0.10 C299400200044 153.3 0.08 0.08 C299400200045 ENDDATA 23 0 C299400200046 ENDSUBENT 45 0 C299400299999 SUBENT C2994003 20241001 20250110 C299400300001 BIB 7 13 C299400300002 REACTION (5-B-10(A,2A)3-LI-6,,DA/DA/DE,A/A/RSD,MSC) C299400300003 The quasi-elastic cross sections as a function of the C299400300004 recoil momentum C299400300005 ANG-SEC (ANG1,A) angle (lab.) between beam and the 1-st alpha C299400300006 (ANG2,A) angle (lab.) between beam and the 2-nd alpha C299400300007 MOM-SEC (MOM-SEC,3-LI-6) C299400300008 SAMPLE The target of 6Li had thickness 5.49e22 nuclei/cm2. C299400300009 ANALYSIS Efficiency: spark chamber - 0.90 +/- 1.0%, range C299400300010 side - 0.51 +/- 7.5%, magnet side - 0.86 +/- 7.5%. C299400300011 ERR-ANALYS (ERR-S) The statistical errors C299400300012 (ERR-SYS) Total systematic uncertainty C299400300013 (ERR-1) Uncertainty in the target thickness C299400300014 STATUS (TABLE,,W.E.Dollhopf+,J,NP/A,316,350,1979) Tab. 2 C299400300015 ENDBIB 13 0 C299400300016 COMMON 4 3 C299400300017 ERR-SYS ERR-1 ANG1 ANG2 C299400300018 PER-CENT PER-CENT ADEG ADEG C299400300019 11. 2.0 35. 52.5 C299400300020 ENDCOMMON 3 0 C299400300021 DATA 3 9 C299400300022 MOM-SEC DATA ERR-S C299400300023 MEV/C MUB/SR2MEV MUB/SR2MEV C299400300024 41.3 0.35 0.09 C299400300025 64.9 0.32 0.04 C299400300026 81.9 0.41 0.06 C299400300027 108.2 0.20 0.05 C299400300028 119.2 0.25 0.04 C299400300029 147.3 0.18 0.07 C299400300030 155.6 0.10 0.04 C299400300031 163.4 0.07 0.03 C299400300032 184.9 0.08 0.05 C299400300033 ENDDATA 11 0 C299400300034 ENDSUBENT 33 0 C299400399999 SUBENT C2994004 20241001 20250110 C299400400001 BIB 7 13 C299400400002 REACTION (6-C-12(A,2A)4-BE-8,,DA/DA/DE,A/A/RSD,MSC) C299400400003 The quasi-elastic cross sections as a function of the C299400400004 recoil momentum C299400400005 ANG-SEC (ANG1,A) angle (lab.) between beam and the 1-st alpha C299400400006 (ANG2,A) angle (lab.) between beam and the 2-nd alpha C299400400007 MOM-SEC (MOM-SEC,4-BE-8) C299400400008 SAMPLE The target of C had thickness 3.19e22 nuclei/cm2. C299400400009 ANALYSIS Efficiency: spark chamber - 0.83 +/- 1.5%, range C299400400010 side - 0.64 +/- 7.5%, magnet side - 0.87 +/- 7.5%. C299400400011 ERR-ANALYS (ERR-S) The statistical errors C299400400012 (ERR-SYS) Total systematic uncertainty C299400400013 (ERR-1) Uncertainty in the target thickness C299400400014 STATUS (TABLE,,W.E.Dollhopf+,J,NP/A,316,350,1979) Tab. 2 C299400400015 ENDBIB 13 0 C299400400016 COMMON 4 3 C299400400017 ERR-SYS ERR-1 ANG1 ANG2 C299400400018 PER-CENT PER-CENT ADEG ADEG C299400400019 11. 2.0 35. 52.5 C299400400020 ENDCOMMON 3 0 C299400400021 DATA 3 9 C299400400022 MOM-SEC DATA ERR-S C299400400023 MEV/C MUB/SR2MEV MUB/SR2MEV C299400400024 41.3 0.33 0.08 C299400400025 64.9 0.19 0.03 C299400400026 81.9 0.17 0.03 C299400400027 108.2 0.11 0.03 C299400400028 119.2 0.12 0.02 C299400400029 147.3 0.13 0.05 C299400400030 155.6 0.05 0.03 C299400400031 163.4 0.11 0.03 C299400400032 184.9 0.02 0.02 C299400400033 ENDDATA 11 0 C299400400034 ENDSUBENT 33 0 C299400499999 SUBENT C2994005 20241001 20250110 C299400500001 BIB 7 14 C299400500002 REACTION (8-O-16(A,2A)6-C-12,,DA/DA/DE,A/A/RSD,MSC) C299400500003 The quasi-elastic cross sections as a function of the C299400500004 recoil momentum C299400500005 ANG-SEC (ANG1,A) angle (lab.) between beam and the 1-st alpha C299400500006 (ANG2,A) angle (lab.) between beam and the 2-nd alpha C299400500007 MOM-SEC (MOM-SEC,6-C-12) C299400500008 SAMPLE For oxygen was a thin water target. The O target had C299400500009 thickness 1.36e22 nuclei/cm2. C299400500010 ANALYSIS Efficiency: spark chamber - 0.91 +/- 0.8%, range C299400500011 side - 0.70 +/- 7.5%, magnet side - 0.88 +/- 7.5%. C299400500012 ERR-ANALYS (ERR-S) The statistical errors C299400500013 (ERR-SYS) Total systematic uncertainty C299400500014 (ERR-1) Uncertainty in the target thickness C299400500015 STATUS (TABLE,,W.E.Dollhopf+,J,NP/A,316,350,1979) Tab. 2 C299400500016 ENDBIB 14 0 C299400500017 COMMON 4 3 C299400500018 ERR-SYS ERR-1 ANG1 ANG2 C299400500019 PER-CENT PER-CENT ADEG ADEG C299400500020 11. 5.0 35. 52.5 C299400500021 ENDCOMMON 3 0 C299400500022 DATA 3 9 C299400500023 MOM-SEC DATA ERR-S C299400500024 MEV/C MUB/SR2MEV MUB/SR2MEV C299400500025 41.3 0.25 0.07 C299400500026 64.9 0.23 0.04 C299400500027 81.9 0.14 0.03 C299400500028 108.2 0.19 0.04 C299400500029 119.2 0.17 0.03 C299400500030 147.3 0.20 0.07 C299400500031 155.6 0.11 0.04 C299400500032 163.4 0.11 0.03 C299400500033 184.9 0.05 0.04 C299400500034 ENDDATA 11 0 C299400500035 ENDSUBENT 34 0 C299400599999 SUBENT C2994006 20241001 20250110 C299400600001 BIB 7 13 C299400600002 REACTION (11-NA-23(A,2A)9-F-19,,DA/DA/DE,A/A/RSD,MSC) C299400600003 The quasi-elastic cross sections as a function of the C299400600004 recoil momentum C299400600005 ANG-SEC (ANG1,A) angle (lab.) between beam and the 1-st alpha C299400600006 (ANG2,A) angle (lab.) between beam and the 2-nd alpha C299400600007 MOM-SEC (MOM-SEC,9-F-19) C299400600008 SAMPLE The target of Na had thickness 0.56e22 nuclei/cm2. C299400600009 ANALYSIS Efficiency: spark chamber - 0.91 +/- 0.8%, range C299400600010 side - 0.70 +/- 7.5%, magnet side - 0.88 +/- 7.5%. C299400600011 ERR-ANALYS (ERR-S) The statistical errors C299400600012 (ERR-SYS) Total systematic uncertainty C299400600013 (ERR-1) Uncertainty in the target thickness C299400600014 STATUS (TABLE,,W.E.Dollhopf+,J,NP/A,316,350,1979) Tab. 2 C299400600015 ENDBIB 13 0 C299400600016 COMMON 4 3 C299400600017 ERR-SYS ERR-1 ANG1 ANG2 C299400600018 PER-CENT PER-CENT ADEG ADEG C299400600019 14. 9.0 35. 52.5 C299400600020 ENDCOMMON 3 0 C299400600021 DATA 3 9 C299400600022 MOM-SEC DATA ERR-S C299400600023 MEV/C MUB/SR2MEV MUB/SR2MEV C299400600024 41.3 0.12 0.06 C299400600025 64.9 0.18 0.04 C299400600026 81.9 0.18 0.05 C299400600027 108.2 0.10 0.04 C299400600028 119.2 0.13 0.03 C299400600029 147.3 0.07 0.05 C299400600030 155.6 0.04 0.03 C299400600031 163.4 0.01 0.01 C299400600032 184.9 0.04 0.04 C299400600033 ENDDATA 11 0 C299400600034 ENDSUBENT 33 0 C299400699999 ENDENTRY 6 0 C299499999999